摘要:
An apparatus is provided for channel encoding in a communication system using an LDPC code. The apparatus includes at least one processor configured to encode input bits using a Bose-Chaudhuri-Hocquenghem (BCH) code, shorten one or more bits of the encoded input bits according to a number of bit groups to be shortened and an order among a plurality of orders according to which the bit groups are shortened, wherein the number of bit groups to be shortened is based on a number of bits to be shortened which is based on a number of the encoded input bits, encode information bits including the encoded input bits and the shortened one or more bits, using an LDPC code to generate parity bits, and puncture one or more bits in the parity bits based on a puncturing parameter among puncturing parameters; and a transmitter configured to transmit a signal that is generated from the encoded information bits based on the punctured one or more bits. The plurality of orders are based on the puncturing parameters and include a first order and a second order that is different from the first order.
摘要:
An apparatus and a method for transmitting and receiving a signal in a communication system are provided. The method includes checking a type of the signal to be transmitted; determining a number of puncture bits according to the type of the signal; and puncturing an encoded signal to be transmitted according to the number of puncture bits.
摘要:
A method for transmitting a signal in broadcasting and communication systems is provided. The method includes dividing source data into two or more streams and respectively coding the two or more streams through coders, selecting two or more symbols from among coded codeword symbols, mapping the selected two or more symbols to one signal constellation for modulation, and transmitting a modulated signal, in which the codeword symbols include one or more non-binary codewords, and a product of orders of finite fields on which the codeword symbols are defined is equal to an order of the signal constellation.
摘要:
A system and method for processing a block Low Density Parity Check (LDPC) code are provided. The system includes, a decoding apparatus for decoding a block LDPC code using a parity check matrix, the parity check matrix including an information part and a parity part, the parity part including a first section (B) including a plurality of first permutation matrices, a second section (D) including a second permutation matrix, a third section (T) including a plurality of identity matrices (I) arranged diagonally within the third section and a plurality of third permutation matrices arranged below the plurality of identity matrices, and a fourth section (E) including a fourth permutation matrix.
摘要:
A method is provided for channel encoding in a communication system using a Low-Density Parity Check (LDPC) code. The method includes grouping information bits into a plurality of groups; determining an order of the plurality of groups to be shortened, based on whether a specific region in a frame is to be LDPC-encoded, where the specific region has a different ratio of a number of bits to be shortened to a number of bits to be punctured; determining a length of an information word to be obtained by shortening the plurality of groups; shortening the plurality of groups on a group basis in the determined order based on the determined length of the information word; and LDPC-encoding a shortened information word.
摘要:
A method and apparatus are provided for transmitting and receiving signaling information in a digital broadcasting/communication system. A method for transmitting the signaling includes encoding signaling information for a physical layer to generate at least one coded block; and transmitting a frame comprising the at least one coded block.
摘要:
Methods and apparatus are provided for transmitting data in a broadcasting system. Input data is encoded by an encoder. A first demultiplexer generates first transmission symbols using the encoded data. The first transmission symbols are modulated, and the modulated first transmission symbols are transmitted. A second demultiplexer generates second transmission symbols using at least a portion of the encoded data. The second transmission symbols are modulated and the modulated second transmission symbols are transmitted.
摘要:
Apparatus and method for receiving a frame including control information in a broadcasting system are provided. A frame for a broadcast service is received and includes at least one Physical Layer Pipe (PLP) and indication information for indicating a change/no-change of control information for the broadcast service in the next frame. Indication information, which includes information on a position in which the control information will change, is extracted from the frame and used to determine the position in which the control information will change.
摘要:
An apparatus and method for generating a parity bit sequence to be transmitted or received over a plurality of frames in a communication system are provided. The method includes puncturing a first parity bit sequence by encoding, the first parity bit sequence with a first puncturing pattern; outputting, as a basic parity bit sequence, non-punctured parity bits that are remaining after the puncturing of the first parity bit sequence with the first puncturing pattern; puncturing a second parity bit sequence that is punctured by puncturing of the first parity bit sequence with the first puncturing pattern, the second parity bit sequence with a second puncturing pattern; and outputting, as an additional parity bit sequence, non-punctured parity bits that are remaining after the puncturing of the second parity bit sequence with the second puncturing pattern.
摘要:
A method and an apparatus are provided for transmitting and receiving signaling information in a digital broadcasting system. The method includes encoding first signaling information for a physical layer to generate a first coded block; encoding second signaling information to generate a second coded block; and transmitting a frame including the first coded block, the second coded block, and at least one physical layer pipe (PLP) data. The first signaling information has a fixed number of bits, and the second signaling information has a variable number of bits. The first signaling information includes information indicating a forward error correction (FEC) type of the second signaling information for receiving the second information, and the second signaling information includes information indicating a modulation scheme used for a related PLP data.